IPA: /ˈdʒɒɡə/
KK: /ˈdʒɑɡər/
A person who runs at a slow, steady pace for exercise or fitness.
Every morning, the jogger runs through the park to stay healthy.
Jogger → The word is formed from "jog" (originating from Middle English *joggen*, meaning to move with a jolting motion) and "-er" (meaning a person who). A jogger is a person who moves in a jolting manner, typically while running at a slow pace.
Think of someone who is 'moving in a jolting manner' — that's what a jogger does, and the '-er' just means a person.